CN107420146B - Cam follower roller apparatus - Google Patents
Cam follower roller apparatus Download PDFInfo
- Publication number
- CN107420146B CN107420146B CN201710266785.0A CN201710266785A CN107420146B CN 107420146 B CN107420146 B CN 107420146B CN 201710266785 A CN201710266785 A CN 201710266785A CN 107420146 B CN107420146 B CN 107420146B
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- CN
- China
- Prior art keywords
- tappet
- cam follower
- longitudinal
- follower roller
- pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000005096 rolling process Methods 0.000 claims abstract description 31
- 230000014759 maintenance of location Effects 0.000 claims description 8
- 230000000717 retained effect Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims 1
- 239000002184 metal Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 239000004696 Poly ether ether ketone Substances 0.000 description 3
- 239000011324 bead Substances 0.000 description 3
- 229920002530 polyetherether ketone Polymers 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/14—Tappets; Push rods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H53/00—Cams ; Non-rotary cams; or cam-followers, e.g. rollers for gearing mechanisms
- F16H53/06—Cam-followers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
- F02M59/102—Mechanical drive, e.g. tappets or cams
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2305/00—Valve arrangements comprising rollers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2307/00—Preventing the rotation of tappets
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Gears, Cams (AREA)
Abstract
The present invention relates to a cam follower roller apparatus comprising: a tappet extending along a longitudinal axis and including a cylindrical tappet body defining a receptacle. The apparatus further comprises a rolling assembly arranged within said cavity and comprising a support body having a base and two longitudinal flanges, a pin centered on a transverse axis and comprising two opposite ends each adapted to be supported by said flanges of the support body, and a roller rotatably mounted on the pin about said transverse axis. According to the invention, the tappet body is provided with at least one elastically deformable projection extending longitudinally inside said housing along a flange of the support body and having a free end comprising first longitudinal retaining means, and said flange comprises means cooperating with said longitudinal retaining means.
Description
Technical Field
The present invention relates to a cam follower roller device, in particular for a jet pump or valve actuator for a motor vehicle. The invention also relates to a method of assembling such a cam follower roller apparatus.
Background
Generally, a cam follower roller device belonging to an injection pump comprises at least a tappet, a roller and a pin, made of copper or steel. The roller is rotatably mounted on a pin, the rolling assembly is centered on the transverse axis, and the tappet extends along the longitudinal axis. The tappet is formed with a cylindrical body defining an internal volume in which the pin and the roller are disposed.
The roller extends axially from the tappet so as to cooperate with a cam synchronized with a camshaft of the internal combustion engine. Rotation of the camshaft causes the piston of the pump against the tappet to cyclically displace to allow fuel to be delivered. The tappet is movable back and forth along the longitudinal axis.
It is known from FR- A-2946406 to provide A support body within the tappet body to support the rolling assembly. The ends of the pin are fixed, for example by press fitting, within through holes formed in the peripheral wall of the support body and are arranged opposite to each other. However, vibrations or shocks may separate the support body from the tappet body.
FR- A-2998629 also proposes A support body seated on the base of the tappet body, said support body comprising two support portions having A semicircular shape and open to the upper side of the device to support the ends of the pins. However, such assemblies require complex tappet designs with internal seats for the support body.
Disclosure of Invention
It is an object of the present invention to propose an improved cam follower roller device comprising a support body with effective means of retaining the rolling assembly within the tappet body, which is low-cost, has a long service life and has an improved assembly process.
To this end, the invention relates to a cam follower roller apparatus comprising: a tappet extending along a longitudinal axis and including a cylindrical tappet body defining a receptacle. The cam follower roller apparatus further includes a rolling assembly disposed within the cavity. The rolling assembly comprises a support body having a base and two longitudinal flanges, a pin centred on a transverse axis and comprising two opposite ends each adapted to be supported by the flanges of the support body, and a roller rotatably mounted on the pin about the transverse axis.
According to the invention, the tappet body is provided with at least one elastically deformable projection extending longitudinally inside said housing along a flange of the support body and having a free end comprising first longitudinal retaining means, and said flange comprises means cooperating with said longitudinal retaining means.
Thanks to the invention, the support body of the rolling assembly is longitudinally retained within the tappet body. The device can be transported and installed without risk of losing components.
Such a cam follower roller apparatus does not require any additional elements to be manufactured, installed and fixed for ensuring the longitudinal retention of the rolling assembly within the tappet body. The proposed invention is thus cost-effective and material-saving.
Furthermore, the projection provided with the longitudinal retaining means extends longitudinally along the longitudinal flange of the support body, all within the cavity defined by the tappet body. The design is compact in the longitudinal and transverse directions and is suitable for use in jet pumps or valve actuators for motor vehicles.
According to advantageous but not compulsory further aspects of the invention, such a cam follower roller device may comprise one or more of the following features:
a projection extends from the inner bore of the tappet, said projection being almost (almost) integrally surrounded by the cylindrical tappet body.
-the cylindrical tappet body comprises an opening, the projection extending longitudinally from an edge of the opening.
The protrusion extends longitudinally along and inwardly towards the flange of the support body.
The first longitudinal retaining means provided to the boss comprise at least one inwardly projecting portion extending transversely from said boss towards the support body.
The first longitudinal retention means provided at the end of the projection comprise a transverse portion having an upper transverse surface.
The flange comprises a transverse portion having a lower transverse surface to cooperate with an associated transverse portion of the first longitudinal holding means.
The flange comprises at least one recess provided with one edge cooperating with the associated transversal portion of the first longitudinal retention means.
-the first longitudinal holding means are held between the lateral edges of the recess.
The recess is an opening provided through the flange.
The first longitudinal retaining means comprise a ramp portion to facilitate the insertion of said means into the recess provided in the flange of the support body.
The tappet body comprises second longitudinal retaining means for the rolling assembly.
The pin is arranged longitudinally between a first longitudinal retaining means of the boss cooperating with the flange of the support body and a second longitudinal retaining means of the tappet body.
The second longitudinal retention means of the tappet body comprise at least one transverse portion extending from the cylindrical portion of the tappet body towards the inside of said tappet body.
The second longitudinal retaining means cooperate with the end of the pin or with a flange of said end of the support pin of the support body.
The cam follower roller device comprises a rolling bearing interposed between the pin and the roller.
The cam follower roller device comprises a sliding bushing interposed between the pin and the roller.
The cam follower comprises at least one anti-rotation device located on the outer periphery of the tappet body.
The tappet body is made of a synthetic material, for example polyamide or polyetheretherketone.
The tappet body is made of metal, for example steel.
The support body is made of metal, for example of steel.
The holding device is made of metal, for example of stamped sheet metal made of steel.
The lateral flange comprises support means for the end of the pin, said support means of the lateral flange comprising a concave portion having a semicircular shape and opening to the upper side of the device.
The lateral flange comprises support means for the end of the pin, said support means of the lateral flange comprising a cylindrical hole in which the end of the pin is inserted.
The invention also relates to an injection pump for a motor vehicle, equipped with a cam follower roller device as described above.
The invention also relates to a valve actuator for a motor vehicle, which is equipped with a cam follower roller device as described above.
Drawings
The invention will now be explained in connection with the attached drawings, which are given as illustrative examples and not limiting for the purpose of the invention. In the drawings:
figure 1 is a top perspective view of a cam follower roller apparatus according to a first embodiment of the present invention;
figure 2 is a cross-sectional view along the line I-I of the cam follower roller device;
figure 3 is a sectional view along the line II-II of the cam follower roller apparatus;
figure 4 is a perspective view of a supporting body dedicated to be arranged inside the cam-follower device;
figure 5 is a top perspective view of a cam follower roller apparatus according to a second embodiment of the present invention;
figure 6 is a sectional view along the line III-III of the cam follower roller apparatus; and
figure 7 is a cross-sectional view along the line IV-IV of the cam follower roller apparatus.
Detailed Description
The cam follower roller device 1 shown in fig. 1 to 4 is adapted to be equipped with an injection pump (injection pump) for a motor vehicle (not shown), preferably for a gasoline car.
The device 1 comprises a tappet 2 and a rolling assembly 3, the rolling assembly 3 comprising a support body 4, a pin 5 and a roller 6. Pin 5 and roller 6 are centered on transverse axis X5, while tappet 2 is centered along longitudinal axis X2. The axis X2 is perpendicular to X5.
In the following, for the sake of facilitating the specific identification (specific identification) of the apparatuses 1 of these figures and of the following figures, the adjectives "longitudinal" and "transverse" and the adverbs "longitudinal" and "transverse" are defined with respect to the axes X2 and X5, respectively. Thus, the longitudinal portions or sections are parallel to the axis X2, while the transverse portions or sections are perpendicular to said axis X2 and parallel to the axis X5.
The tappet 2 comprises a cylindrical tappet body 7, the cylindrical tappet body 7 being centered on the axis X2 and extending between an upper edge 8 and a lower edge 9. The tappet body 7 defines a cylindrical outer surface 10a and a cylindrical inner bore 10b, the cylindrical inner bore 10b defining a cavity 11 inside the tappet 2. The housing 11 is adapted to accommodate the rolling assembly 3. The tappet 2 is able to move back and forth along the axis X2 in a not shown hole belonging to an injection pump or motor by sliding the surface 10a in the hole. Said surface 10a comprises anti-rotation means 10c, here projections dedicated to slide in adapted grooves provided in the hole, to prevent any rotation of said tappet 2 in this hole. The tappet 2 can be made of a synthetic material, such as polyamide 6.6(PA) or Polyetheretherketone (PEEK), or of a metal, such as steel. The material of the tappet 2 is selected to withstand the oil and its additives and temperature variations.
The rolling assembly 3 is arranged in the receptacle 11 of the tappet body 7. The rolling assembly 3 comprises a supporting body 4, the supporting body 4 forming a supporting element for the pin 5 and the roller 6. The support body 4 comprises a base 13 centred on the transversal axis X5. Two lateral flanges 14, 15 are opposite each other with respect to said base 13 and extend longitudinally from said base 13 towards the upper side of the device 1.
The lateral flanges 14, 15 each comprise support means 16, 17 for the pin 5. The pin 5 is cylindrical and extends along a transverse axis X5. In the embodiment shown in fig. 4, the support means 16, 17 of the lateral flanges 14, 15 each comprise a concave portion of semicircular shape (profile) and open to the upper side of the device 1. Said recessed portions 16, 17 are adapted to receive the ends 18, 19 of the pin 5. The shape of the recesses 16, 17 matches the cylindrical ends 18, 19 of the pin 5. As an alternative (not shown), the support means of the lateral flanges 14, 15 may each comprise a cylindrical hole into which the end of a pin is inserted. As an embodiment not shown, at least one end 18 or 19 may be fixed to the respective support device 16 or 17, respectively.
The support body 4 is preferably made of metal, for example steel such as XC 75. The material of the support body 4 is selected to withstand oil flow, temperature variations and mechanical stresses. The support body 4 is preferably made of a metal plate deformed by stamping, so that cost reduction and weight reduction are possible.
The rolling assembly 3 further comprises a roller 6, the roller 6 being rotatably mounted on the pin 5 by means of a sliding bushing 20 arranged between said pin 5 and the roller 6. Alternatively, the sliding bush may be replaced with a rolling bearing having rollers (rollers) or needles. The roller 6 extends longitudinally from the upper edge 8 of the tappet 2 so as to cooperate with a cam synchronized with the camshaft of an internal combustion engine, not shown.
According to the invention, the rolling assembly 3 is longitudinally retained within the tappet 2 by means of a projection (tab)21, 22.
The bore 10b of the cylindrical tappet body 7 comprises two protrusions 21, 22, which protrusions 21, 22 extend longitudinally from a portion 7a having a higher thickness than the rest of the tappet body 7. Said portion 7a is arranged on the upper side of the tappet body 7, close to the upper edge 8. The projections 21, 22 (with spaces 34, 35 between the projections 21, 22 and the cylindrical tappet body 7) are surrounded by the cylindrical tappet body 7. The projections 21, 22 are opposite to each other with respect to the axis X2.
The projections 21, 22 extend longitudinally along the flanges 14, 15 of the support body 4 and are directed towards the base 13 of said support body 4. More precisely, the projections 21, 22 are arranged laterally between said flanges 14, 15 and the cylindrical tappet body 7. The projections 21, 22 are elastically deformable and can then be deformed laterally during the mounting of the rolling assembly 3. Spaces 34, 35 are provided between the cylindrical tappet body 7 and said protrusions 21, 22, respectively, to allow lateral displacement of said protrusions 21, 22 during deformation.
The projections 21, 22 each have a free end provided with a first longitudinal holding means 24, 25, respectively. The first longitudinal holding means 24, 25 each comprise a transverse portion 26, 27, respectively.
The flanges 14, 15 of the support body 4 each comprise an opening 28, 29 provided with an upper edge 30a, 31a, respectively. Said upper edges 30a, 31a define lower transverse surfaces in contact with associated upper transverse surfaces defined by the transverse portions 26, 27 of the longitudinal retaining means 24, 25, respectively. The transverse portions 26, 27 are held between the lateral edges 30b, 30c and 31b, 31c of said openings 28 and 29. Relative rotation between the tappet 2 and the support body 4 and therefore between the tappet 2 and the rolling assembly 3 is then prevented.
The rolling assembly 3 is inserted longitudinally into the housing 11 from the lower edge 9 towards the upper edge 8 of said tappet body 7. The projections 21, 22 are elastically deformed by the flanges 14, 15 of the support body 4, said projections 21, 22 being deformed within the spaces 34, 35. The flanges 14, 15 slide against said bosses 21, 22 until the lateral portions 26, 27 of the bosses 21, 22 fit into the openings 28, 29 of said flanges 14, 15. The transverse portions 26, 27 support the upper edges 30a, 31a of the flanges 14, 15 of the support body 4 in the longitudinal direction. The rolling assembly 3, comprising the support body 4 supporting the pin 5 and the roller 6 in the longitudinal direction, is then arranged in the housing 11 of the cylindrical tappet body 7 and is held in the tappet body by means of the projections 21, 22.
The projections 21, 22 extend longitudinally in the opposite direction to the insertion of the support body 4. The bosses 21, 22 also each include a ramp portion 32, 33 to facilitate sliding insertion of the flanges 14, 15 within the bosses 21, 22.
The tappet body 7 further comprises second longitudinal retaining means 36, 37 for retaining the rolling assembly 3 within the tappet 2. The second longitudinal retention means each comprise a transverse portion 36, 37 extending from the upper edge 8 of the tappet body 7 towards the inside of the tappet body 7. The transverse portions 36, 37 are opposite each other towards the axis X2.
Said transverse portions 36, 37 longitudinally cover the ends 18, 19 of the pin 5 to prevent any disassembly (dislodging) of said pin 5 from the upper side of the tappet body 7 and therefore of the rolling assembly 3 from the upper side of the tappet body 7.
The rolling assembly 3 is then held longitudinally on one side by the first fixing means 26, 27 of the projections 21, 22 of the tappet body 7 and on the other side by the second fixing means 36, 37 of the tappet body 7. Relative rotation between the rolling assembly 3 and the tappet body 7 is also prevented.
The second embodiment shown in fig. 5 to 7 differs from the embodiment of fig. 1 to 4 in that the tappet body 7 comprises projections 38, 39 extending from openings 40, 41 provided on said body 7.
The cylindrical tappet body 7 comprises two through openings 40, 41 opposite each other with respect to the axis X2. The openings 40, 41 each define a lower edge 40a, 41a from which the bosses 38, 39 extend.
The projections 38, 39 extend longitudinally from said lower edges 40a, 41a of said openings 40, 41 towards the upper edge 8 of the tappet body 7 and along the flanges 14, 15 of the support body 4. The projections 38, 39 are inclined toward the flanges 14, 15, respectively.
The bosses 38, 39 each have a free end provided with a first longitudinal retention means 42, 43, respectively. The first longitudinal holding means each comprise a transverse portion 42, 43, respectively. The lateral portions 42, 43 extend laterally and laterally outwardly from the bosses 38, 39. Bead portions (beads) 44, 45 are defined between the transverse portions 42, 43 and the bosses 38, 39, respectively.
The flanges 14, 15 of the support body 4 each comprise an opening 28, 29 provided with an upper edge 30a, 31a, respectively. Said upper edges 30a, 31a define lateral surfaces in contact with the associated lateral surfaces defined by the lateral portions 42, 43. The transverse portions 42, 43 are held between the lateral edges 30b, 30c and 31b, 31c of said openings 28 and 29. Relative rotation between the tappet 2 and the support body 4 and therefore between the tappet 2 and the rolling assembly 3 is then prevented.
The rolling assembly 3 is inserted longitudinally into the housing 11 from the lower edge 9 towards the upper edge 8 of said tappet body 7. The projections 38, 39 are elastically deformed outward by the flanges 14, 15 of the support body 4. The flanges 14, 15 slide against said bosses 38, 39 until the lateral portions 42, 43 of the bosses 38, 39 abut the upper edges 30a, 31a of the openings 28, 29 of said flanges 14, 15. More precisely, the bead portions 44, 45 fit within the openings 28, 29 until said abutment. The transverse portions 42, 43 support the upper edges 30a, 31a of the flanges 14, 15 of the support body 4 in the longitudinal direction. The rolling assembly 3, comprising the support body 4 supporting the pin 5 and the roller 6 in the longitudinal direction, is then arranged in the housing 11 of the cylindrical tappet body 7 and is held in the tappet body by means of the projections 38, 39.
The projections 38, 39 are inclined towards the flanges 14, 15 and extend longitudinally in the insertion direction of the support body 4. The bosses 38, 39 define ramp portions for facilitating sliding insertion of the flanges 14, 15 within the bosses 38, 39.
Claims (10)
1. A cam follower roller device (1) comprising:
-a tappet (2) extending along a longitudinal axis (X2) and comprising a cylindrical tappet body (7) defining a cavity (11),
-a rolling assembly (3) arranged inside said housing cavity (11) and comprising a supporting body (4), a pin (5) and a roller (6), said supporting body (4) having a base (13) and two longitudinal flanges (14, 15), said pin (5) being centered on a transversal axis (X5) and comprising two opposite ends (18, 19), each of these two opposite ends (18, 19) being adapted to be supported by said flanges (14, 15) of the supporting body (4), said roller (6) being rotatably mounted on said pin (5) about said transversal axis (X5),
it is characterized in that the preparation method is characterized in that,
-the tappet body (7) being integrally provided with at least one elastically deformable projection (21, 22, 38, 39), the projection (21, 22, 38, 39) extending longitudinally within the housing (11) along a flange (14, 15) of the support body (4) and having a free end comprising first longitudinal retention means (24, 25, 42, 43), and
-said flange (14, 15) comprises means (28, 29, 30a, 31a) cooperating with said longitudinal retaining means (21, 22, 42, 43).
2. A cam follower roller apparatus according to claim 1, wherein the protrusion (21, 22, 38, 39) extends from the inner bore (10b) of the tappet (2), the protrusion (21, 22, 38, 39) being almost integrally surrounded by the cylindrical tappet body (7).
3. A cam follower roller apparatus according to claim 1, wherein the cylindrical tappet body (7) comprises an opening (40, 41), the projection (38, 39) extending longitudinally from an edge (40a, 41a) of the opening (40, 41).
4. A cam follower roller apparatus according to any of claims 1 to 3, wherein the first longitudinal retaining means (24, 25, 42, 43) comprises a transverse portion (26, 27, 42, 43).
5. A cam follower roller apparatus according to claim 4, wherein the flange (14, 15) comprises a transverse portion (30a, 31a) cooperating with an associated transverse portion (26, 27, 42, 43) of the first longitudinal retaining means (24, 25, 42, 43).
6. A cam follower roller apparatus according to claim 5, wherein the flange (14, 15) comprises at least one recess (28, 29), the at least one recess (28, 29) being provided with one edge (30a, 31a) cooperating with an associated transverse portion (26, 27, 42, 43) of the first longitudinal retaining means (24, 25, 42, 43).
7. A cam follower roller apparatus according to claim 6, wherein the first longitudinal retaining means (24, 25, 42, 43) is retained between the lateral edges (30b, 30c, 31b, 31c) of the recesses (28, 29).
8. A cam follower roller device according to any of claims 1 to 3, characterized in that the tappet body (7) comprises second longitudinal retaining means (36, 37) for the rolling assembly (3), the pin (5) being arranged longitudinally between the first longitudinal retaining means (24, 25, 42, 43) of the boss (21, 22, 38, 39) cooperating with the flange (14, 15) of the support body (4) and the second longitudinal retaining means (36, 37) of the tappet body (7).
9. A cam follower roller apparatus according to claim 8, characterized in that the second longitudinal retention means of the tappet body (7) comprise at least one transverse portion (36, 37), the at least one transverse portion (36, 37) extending from the cylindrical tappet body (7) towards the inside of the tappet body (7).
10. A cam follower roller apparatus as claimed in claim 9, characterized in that the second longitudinal retaining means (36, 37) cooperate with the ends (18, 19) of the pin (5) or with the flanges (14, 15) of said ends (18, 19) of the supporting pin (5) of the supporting body (4).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016207682.5A DE102016207682A1 (en) | 2016-05-04 | 2016-05-04 | Cam follower roller device |
| DE102016207682.5 | 2016-05-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107420146A CN107420146A (en) | 2017-12-01 |
| CN107420146B true CN107420146B (en) | 2020-12-08 |
Family
ID=60119515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710266785.0A Active CN107420146B (en) | 2016-05-04 | 2017-04-21 | Cam follower roller apparatus |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107420146B (en) |
| DE (1) | DE102016207682A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017212521A1 (en) * | 2017-07-20 | 2019-01-24 | Aktiebolaget Skf | Self-aligning cam follower roller device |
| DE102019102289B3 (en) * | 2019-01-30 | 2020-03-05 | Schaeffler Technologies AG & Co. KG | Roller plunger for a fuel pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6196176B1 (en) * | 1998-12-15 | 2001-03-06 | Ina Walzlager Schaeffler Ohg | Switchable cam follower |
| DE202012012656U1 (en) * | 2012-11-12 | 2013-08-05 | Schaeffler Technologies AG & Co. KG | Pump unit with rolling tap |
| CN204002959U (en) * | 2014-04-25 | 2014-12-10 | 武汉东方骏驰精密制造有限公司 | A kind of tappet with anti-rotating function and fuel pump |
| CN105507975A (en) * | 2014-10-08 | 2016-04-20 | 舍弗勒技术股份两合公司 | Mechanical roller tappet |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2946406B1 (en) | 2009-06-05 | 2016-07-01 | Skf Ab | FOLLOWING CAM ROLL DEVICE, IN PARTICULAR FOR A FUEL INJECTION PUMP. |
| FR2998629B1 (en) | 2012-11-29 | 2015-07-03 | Skf Ab | FOLLOWING ROLL DEVICE OF A CAM |
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2016
- 2016-05-04 DE DE102016207682.5A patent/DE102016207682A1/en active Pending
-
2017
- 2017-04-21 CN CN201710266785.0A patent/CN107420146B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6196176B1 (en) * | 1998-12-15 | 2001-03-06 | Ina Walzlager Schaeffler Ohg | Switchable cam follower |
| DE202012012656U1 (en) * | 2012-11-12 | 2013-08-05 | Schaeffler Technologies AG & Co. KG | Pump unit with rolling tap |
| CN204002959U (en) * | 2014-04-25 | 2014-12-10 | 武汉东方骏驰精密制造有限公司 | A kind of tappet with anti-rotating function and fuel pump |
| CN105507975A (en) * | 2014-10-08 | 2016-04-20 | 舍弗勒技术股份两合公司 | Mechanical roller tappet |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102016207682A1 (en) | 2017-11-09 |
| CN107420146A (en) | 2017-12-01 |
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